diff --git a/include/asterisk/res_fax.h b/include/asterisk/res_fax.h
index 5bff3ffa0b..802dcd9d76 100644
--- a/include/asterisk/res_fax.h
+++ b/include/asterisk/res_fax.h
@@ -52,8 +52,8 @@ enum ast_fax_capabilities {
 enum ast_fax_modems {
 	/*! V.17 */
 	AST_FAX_MODEM_V17 = (1 << 0),
-	/*! V.27 */
-	AST_FAX_MODEM_V27 = (1 << 1),
+	/*! V.27ter */
+	AST_FAX_MODEM_V27TER = (1 << 1),
 	/*! V.29 */
 	AST_FAX_MODEM_V29 = (1 << 2),
 	/*! V.34 */
diff --git a/res/res_fax.c b/res/res_fax.c
index 2b2c2fb130..16a3d58718 100644
--- a/res/res_fax.c
+++ b/res/res_fax.c
@@ -329,7 +329,7 @@ static AST_RWLIST_HEAD_STATIC(faxmodules, fax_module);
 #define RES_FAX_MINRATE 4800
 #define RES_FAX_MAXRATE 14400
 #define RES_FAX_STATUSEVENTS 0
-#define RES_FAX_MODEM (AST_FAX_MODEM_V17 | AST_FAX_MODEM_V27 | AST_FAX_MODEM_V29)
+#define RES_FAX_MODEM (AST_FAX_MODEM_V17 | AST_FAX_MODEM_V27TER | AST_FAX_MODEM_V29)
 #define RES_FAX_T38TIMEOUT 5000
 
 struct fax_options {
@@ -604,7 +604,7 @@ static int update_modem_bits(enum ast_fax_modems *bits, const char *value)
 		if (!strcasecmp(m[j], "v17")) {
 			*bits |= AST_FAX_MODEM_V17;
 		} else if (!strcasecmp(m[j], "v27")) {
-			*bits |= AST_FAX_MODEM_V27;
+			*bits |= AST_FAX_MODEM_V27TER;
 		} else if (!strcasecmp(m[j], "v29")) {
 			*bits |= AST_FAX_MODEM_V29;
 		} else if (!strcasecmp(m[j], "v34")) {
@@ -682,7 +682,7 @@ static int ast_fax_modem_to_str(enum ast_fax_modems bits, char *tbuf, size_t buf
 		strcat(tbuf, "V17");
 		count++;
 	}
-	if (bits & AST_FAX_MODEM_V27) {
+	if (bits & AST_FAX_MODEM_V27TER) {
 		if (count) {
 			strcat(tbuf, ",");
 		}
@@ -711,22 +711,14 @@ static int check_modem_rate(enum ast_fax_modems modems, unsigned int rate)
 {
 	switch (rate) {
 	case 2400:
-		if (!(modems & (AST_FAX_MODEM_V34))) {
-			return 1;
-		}
-		break;
 	case 4800:
-		if (!(modems & (AST_FAX_MODEM_V27 | AST_FAX_MODEM_V34))) {
+		if (!(modems & (AST_FAX_MODEM_V27TER | AST_FAX_MODEM_V34))) {
 			return 1;
 		}
 		break;
 	case 7200:
-		if (!(modems & (AST_FAX_MODEM_V17 | AST_FAX_MODEM_V29 | AST_FAX_MODEM_V34))) {
-			return 1;
-		}
-		break;
 	case 9600:
-		if (!(modems & (AST_FAX_MODEM_V17 | AST_FAX_MODEM_V27 | AST_FAX_MODEM_V29 | AST_FAX_MODEM_V34))) {
+		if (!(modems & (AST_FAX_MODEM_V17 | AST_FAX_MODEM_V29 | AST_FAX_MODEM_V34))) {
 			return 1;
 		}
 		break;
@@ -3921,13 +3913,6 @@ static int set_config(int reload)
 		goto end;
 	}
 
-	if (options.minrate == 2400 && (options.modems & AST_FAX_MODEM_V27) && !(options.modems & (AST_FAX_MODEM_V34))) {
-		ast_fax_modem_to_str(options.modems, modems, sizeof(modems));
-		ast_log(LOG_WARNING, "'modems' setting '%s' is no longer accepted with 'minrate' setting %u\n", modems, options.minrate);
-		ast_log(LOG_WARNING, "'minrate' has been reset to 4800, please update res_fax.conf.\n");
-		options.minrate = 4800;
-	}
-
 	if (check_modem_rate(options.modems, options.minrate)) {
 		ast_fax_modem_to_str(options.modems, modems, sizeof(modems));
 		ast_log(LOG_ERROR, "'modems' setting '%s' is incompatible with 'minrate' setting %u\n", modems, options.minrate);
diff --git a/res/res_fax_spandsp.c b/res/res_fax_spandsp.c
index bc3b810adb..30525ee048 100644
--- a/res/res_fax_spandsp.c
+++ b/res/res_fax_spandsp.c
@@ -498,7 +498,7 @@ static int spandsp_modems(struct ast_fax_session_details *details)
 	if (AST_FAX_MODEM_V17 & details->modems) {
 		modems |= T30_SUPPORT_V17;
 	}
-	if (AST_FAX_MODEM_V27 & details->modems) {
+	if (AST_FAX_MODEM_V27TER & details->modems) {
 		modems |= T30_SUPPORT_V27TER;
 	}
 	if (AST_FAX_MODEM_V29 & details->modems) {